CoolIT has three new coolant distribution units or CDUs for 2024. These new CDUs are designed to cool racks of servers, including higher-end NVIDIA GB200 NVL72 servers. The three new models are the CoolIT AHx240, AHx180, and CHx500. Two offer full cooling without needing a facility water loop. The third is a higher-density solution, but requires a facility water loop.
Three New CoolIT Coolant Distribution Units Launched
The CoolIT AHx240 is a 240kW cooling capacity CDU that comes in a 2-rack footprint.
For something a bit smaller, the AHx180 is also a 2-rack CDU, but with only 180kW of cooling capacity.
Something that is really interesting here is that CoolIT says that the AHx240 can handle up to four GB200 NVL72 racks while the AHx180 can handle two. These are both units that fit between hot and cold aisles and handle the cooling for several racks.
Another option is the CHx500. These are 500kW CDUs that are designed to be stacked four in a rack for up to 2MW of heat management.
If you notice the size difference, that is likely due to the CHx500 exchanging to facility water loops. That makes it more in-line with the CDUs that we featured when we showed how liquid cooling works using high-densiy Gigabyte 2U 4-node servers.
If you want to learn about liquid cooling, that is a great resorce to learn.
Final Words
Hopefully we will get to see these at shows over the next few weeks at trade shows. Liquid cooling is a hot space right now. If you want to learn more about the CoolIT Liquid Lab where these servers are tested and designed, you can see our tour below.
It is always fun to see content from the STH YouTube archives.
“The CoolIT AHx240 is a 240kW cooling capacity CDU that comes in a 2-rack footprint.”
So 240kW in 2 racks. And nVidia is 120kW per rack. So literally it’s a 1:1 ratio of racks for cooling to racks for compute.